Defeat the Kraken boss in Coral Cave (World 3) to unlock Blaze as a playable character.

Blaze. To unlock Blaze as a playable character, beat the boss of World 3 (Coral Cave).

Technical Bonus\n\n At specific points during the second phase of each boss fight, bosses will temporarily expose a flashing red weak point for you to destroy. Hitting this weak point with a Dragon Shot will instantly kill the boss, and award you a Technical Bonus of 30,000 points.